Lock



Dec. 19, 1922.

F. 1. MATCHETTE.

LOCK.

FILED Aus. I3. 1919.

Patented Dec. 19, 1922.

Nien

FRANK J'. IVIATCHETTE, OF NEW YORK, N.

Y., Assienon To srinvinoa COMPANY, or

NEW YORK,1\T. Y., A CORPORATION OF DELAWARE;

LOCK.

Application led August 13, 1919. Serial No. 317,176.

To al?. whom t may concern:

Be it known that I, FRANK J. Marorrn'r'rn, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Locks, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to locks.

One object of the invention is to provide a lockmechanism so constructed that the means for securing it to its support is effectively concealed and protected when the lock bolt has been thrown to locking posi! tion.

Another object is to conceal the securing means when the lock is in locking position by an element required to complete the lock structure in any case, for instance.V the pivotal mounting for the handle.

Further objects and advantages will become apparent as the description proceeds.

in the accompanying drawings, l `i 'nrey l is a horizontal section of part of the cabinet to which lockingl means according to my invention have been applied;

Fig. 2 is a vertical section on line 2 2 of Fig. 1; and

Fig. 3 is a vertical section on line 3-3 of Fig. l.

In the embodiment of my invention selected for illustration, the lock is completely enclosed in a suitable casing 29 secured to the inside of the door by means of screws 39 which pass thru the escutcheon 3l and door and take into the interiorly threaded studs 32. The escutcheon is preferably formed with a conical depression 33 countersunk into the outer side of the door. It will'be noted that the heads of the screws are seated in depressions formed in the base of the conical depression and thatthey are covered with a disc 34. Suitable openings (Fig. 3) aie formed in the disc through which access may be had to the screws when the openings are in register therewith.

A handle 36 is preferably employed as a permanent part of the lock. The handle and discare rotatably supported in a suitable bearing in the base of the conical depression of the escutcheon. The handle may be made as lan integral part of the Adisc 34, or it may be fixed thereto. 4In either event,

however, the disc rotates kwith the handle so that the position of the openings 35 is dependent upon the position of the handle, or in other words upon the condition of the lock. The arrangement is such that the openings 3,5 register with the screws only when the lock is in its unlocked condition. rlhus the lock cannot be removed from the door by loosening the screws so long as the door is locked.

ln the `present instance the handlev and disc are made of separate parts. The handle forms a connecting` element between the disc and a retainer member 37 therefor. The shank of the handle passes thru a suitable slot in the disc, through a circular bearing in the escutcheon, and thru a slot in the retainer-member, the parts being fixed in assembled relation by strikingfup projections or shoulders 38 on the shank of the handle.

The inner end of the handle is suitably fashioned to engage and operate the lock. For this purpose, it is provided with-prongs 39 which project into slots in the bolt oper ating` cam 40. `rlhis cam is pivotally mounted preferably on the back wall of the casing 29 and isprovided with a linger 4l for operating the bolt 42.

rlhe bolt is mounted for longitudinal sliding movement in suitable slots in the end walls of the casing Q9, and when advanced to its locking position engages lin a slot 43 in a wall of a housing 44 hereinafter referred to. As shown more particularly in Fig. 3, the bolt. is longitudinally slotted at i5 so that it will not interfere with the studs and for the purpose of cooperating with an interlocking mechanism to be later described.

The central portion of the bolt is somewhat enlarged as Vshown and cut away to form shoulders L6-46 for engagement with the cam member 40 to limit the movement of the bolt. The body ofthe bolt is further .cut away to form can) snrfaces-l00 of the cam in engagement with a Wall of the slot 45 after the bolt has been thrown.

The bolt is thrown in either direction by rotatino the handle and hence the cam 40 thru substantially 90o. During this rotation the finger 41 engages one of the cam surfaces .IW-47, to force the bolt 42 into either a locking or unlocking position. From the construction shown it Will be noted that the end of the finger 4l by its engagement with the cam surfaces 47--47 holds the bolt against Withdrawal from a locked or unlocked position until the cam has been again rotated: Thus the bolt is effectively blocked against accidental displacement.A

Various forms of interlocking mechanism may be employed for controlling the operation of the door locking means. The interlocking mechanism disclosed includes a rod 50 slidably mounted in suitable brackets 51 secured Within the housing 44 heretofore mentioned. The rod 50 serves as a detent 'for interlocking With the adjacent door locks 27-27 alternately.

The rod is provided With a number of arms 52, 53 and 54. The arm 53 is rigidly connected With a slide bar 55 to prevent turning of the rod and also to operate the signalling mechanism, 'as will be later explained. The arms 52 and 54 are each engaged by a cam member adjacent each' of the lock bolts 42. Each cam member comprises a disc portion carrying arms 57 and a ratchet portion having arms 56 each provided with` a. bevelled edge'56. The body portion of each cam member is formed with fiat faces 59 and bevelled edges 59 for cooperation with a leaf spring 58 mounted within the housing.

A cam member is rotatably mounted in each of the brackets 51 in such a position that the ratchet portion thereof is opposite a lock bolt 42. lVhen a lock bolt is in withdrawn position the spring 58 bears against aflat face 59 of the corresponding cam member to yieldably hold an arm 56 thereof in the path of movement of the lock bolt. in this position the bevelled edge of the arm projects toward the lock bolt. (See left side of Fig. 2.) As the bolt is advanced to locking posit-ion the end thereof engages this bevelled edge 56 of the arm thus causing rotation of the cam member against the action of the spring 58. However1 after a bevelled edge 59 of the body portion of the cam r member has passed center With respect to the spring 58, the spring acts to aid the rotation of the cam member and in fact throws the cam member to such position that the opposite arm 56 thereof is yieldably pressed against a. longitudinal edge of the. advanced bolt (see Figure bolt is again Withdrawn the spring forces the arm 56 to the position previously described Where it may be again engaged by the end of the bolt upon the next advance thereof.

lVhen the advanced v During the advance of a bolt andconsequent rotation of its corresponding cam member a cam 57 of the cam member acts upon the corresponding arm 52 or 54 of the rod 50 to project the rod into the slot 45 of the advanced bolt 42 (see right side of Figures 1 and 2). It will be noted from Figures 1 and 2 that the rod is of such length that when shifted to position to interlock With the bolt just advanced it also releases the other bolt so that the released bolt may be withdrawn. l

Thus `it will be seen that as the bolt of a lock on one side of a compartment is advanced to locking position, it acts upon its corresponding cam mechanism to throw the rod 50 into locking engagement with the bolt thus advanced. `When the lock bolt on the other side of the compartment is advanced to locking position it acts upon its corresponding cam mechanism to shift the rod 50 in the opposite direction whereby the last advanced bolt is secured against Withdrawal and the first mentioned bolt is released.

In order to insure that the rod 50 remains in either of its shifted positions a. snap spring such as shown at 60 may be employed. This spring is conveniently mounted on a pin 60 secured to the housing and is bent to form opposed yieldable shoulders 61 between which the arm 53 is forced when the rod is shifted. As the spring is expanded by movement of the rod through its middle position, it will have a tendency to hold the rod at either end of its movement. The bar is designed to operate the signals on opposite sides of the compartment. Each signal is supported by a face plate 62 secured to corner member or door jamb 14 or 14 adjacent the lock of a compartment door and projects into a suitable recess 63 in the corner piece. The face plate is provided With an opening or display Window 64 Whose long dimension is preferably vertically arranged in order to conserve space horizontally. A sign plate 65 fixed to the face plate is provided With a legend bearing portion 65 disposed behind the Window. From an inspection of Figs. 1 and` 2 it Will be noted that the legend bearing portion 65 is spaced somewhat from the Window to admit a movable target 66 between the plate and Window. The movable target also bears a suitable legend different from that on the fixed sign plate.

The target is preferably formed as an integral part of a plate 67 pivotally mounted upon a vertical pin 68 which passes thru ears 69 formed on the plate. The pin 68 is preferably mounted in the opposite Walls of a bracket or housing 70 secured to or formed integral With the fixed sign plate A spring '71 positioned between the plate 6i' and a vertical Wall of the housing yieldably maintains the target in its normal retracted position. (See left side of Fig.V i). The target is movedv toexposed position in frontofthe sign plate by means of an angularly disposedfinger 72 preferably formed as an integral part of the plate 67, engageablewith the yend of the'slide bar 55 previously referred to. 1 i* They slide bar is mounted for longitudinal movement in the brackets 51 and as pre# viously pointed out, is actuated by the interlocking detenty rod 50. When the detent rod isshifted by the locking of a door, the slide bar is also` shiftedy toward the signal adjacent the door to 'shift the movable target to exposed position. At the same time the linger 72 of the opposite signal is released by the slide bar whereby the fixed sign plate of the that signal is exposed.

` The fixed sign platefofl the signal on thev outer or receiving side of a compartment and the movable target ofthe opposite signal kbear thesamel legend, such as the word Vacant Likewise the movabletarget of the outer signal and the fixed sign plate of the opposite signal bear the same legend such as the word Taken Thus the same sign is displayed on both sides of a compartment yaty any one time.

The operation of the mechanism above described may now be briey summarized. Then a deliveryman desires to deliver a package or parcel to the occupant of a room or apartment, he `selects such compartment in the cabinet as he finds to be indicated as vacant He then lunlocks the door, deposits the article and then locks the door. As the lock bolt 42 of this door advances to locking position it operates the interlocking mechanism as abovedescribed so that the detent rod 50 enters the slot 45 thereof to maintain the locked condition of kthis door so that the deposited article cannot be removed by one outside the premises. This movement of the rod releases the lock on the inner door of the compartment. At the same time the slide bar 55 is actuated by the rod 50 to change bothl signals of the compartment. The target of the outer signal is moved to exposed `position while that of the inner signal is retracted and the fixed sign plate thereof is exposed. vBoth vsignals are thus changed .tov indicate that the compartment is taken, The-occupant of the premises can tell at a glance that a delivery has been made and which compartment contains the delivered article.

After the inner door has been opened and the article removed the door is closed vand locked. The operation ofthe parts in connec'tion with the locking of theinner door n is. the same as described for the outer door.

This leaves the inner door locked against opening and leaves the lock of the outer door in released condition so that the comfor an` enclosure of any sort, a key-controlled means of any usual or preferred type'would receive another be substituted for the interlocking mechay nism herein described.

. Many modifications and alterations may readily be made by those skilled in the art without eliminating certain features which mayproperly be said to constitute-theessential items. of noveltyV involved, which items are intended to. be .defined and secured to me bythe following claims.- f

'I claim f. 1

l. A lock having a bolt, a cam. forv throwing the bolt, a handle for actuating the "cam,

means for securing the lock` to a door or the like, and a lock cover operated by the handle for concealing said securingvmeans to. preyvent remo-val of the lock .when the boltis thrown yto locked position.

2. In combination, a doormember, a lock having a bolt, said lock being mounted on the door,a plate lying on the front of the door, screws passing through the plate and secured to said lock, a key for operating the bolt passing from the lock through the plate,

said screws may be reached, said disc being turned so that the apertures are out of line,r

with the screws when the bolt is thrown to lock the door.

3. In combination, a lock having a bolt, a lthrowing cam, a handle for the cam, means for holding the bolt in locked position, ay

`and a disc having apertures through which disc secured to the handle, said disc having openings therethrough, screws for fastening thelock in place, said screws lying under the disc out of register with said openings when the bolt is thrown to locked position.

4.. In combination, a door member, a lock having a bolt lying on the back side of said.

door member, a plate lying on the front of the door, said plate having a depressed portion, screws passing through the depressed portion of the plate and secured to the lock, a handle for operating the bolt passing from .the lock through the depressed portion of the plate, and a disc fitting into the depressed portion of said plate, said disc having apertures through which said screws may be-reached, said disc being turned so that the apertures are out vof register with thescrews when the bolt is thrown to rlock the door. f

5. In combination, a door member, a lock upon the inside of the door, a plate on the outside of the door, a handle passing through the plate for operating the look, a disov or guard secured to the handle, screws passing through the plate and fastened to p the look, a dise having portions out away to permit aoeess to the screws and means for.

' handlev is in its looked position.

7. In a look for doors, in combination, lan

esou'toheon-plate having soreiv holos,lsoreWs for fastening said plate toA the door, and look-operating means pivotally supported by said plate and movable into looking and unlooking positions, said look-operating means covering all but a relatively small portion of the flat surface of said esoutoheon-plate but being shaped to expose relatively small por- 1,439,5esf

tions having a spacing leorresponding to said sorews, Wherebyisaid screws 'are covered and protected against removal in certain positions of said yloelf'ing means, and unprotected in other positions; s 8. ln a lock` for doors, in combination, an esonteheon-plate, a fastener passing through said plate tofrfasten it to the door, a pivoted look-operating mechanism passing through said escntoheonfplate, a coverl plate forming part of saidloolooperating mechanism, said @over plate overlying inost of thesurfaoe of "y esoutoheQn-plate and covering said taser, when inloeling positioinbut exposing'- said iastener when in a dille/rent position.

ln a looltilor doors, ineombination, a fixed plate, asteners .en5' afingv said plate to tasten it to the door, and look-operating ineans supported by said plate and rotatable aboutvan y axis passing v; therethrough, saidV look-operating `means including a Cover overlying said platesaid Cover being shaped so as to expose said :fasteners When said look operating means is moved to unlocking position only.

ln witness-whereof I' hereunto subscribe ing; name thislSth day o August 1919.

lPRi/'XNH J. MATCHETTE. 

